222201021986 has 4 divisors (see below), whose sum is σ = 333301532982. Its totient is φ = 111100510992.

The previous prime is 222201021953. The next prime is 222201022013. The reversal of 222201021986 is 689120102222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 164050110961 + 58150911025 = 405031^2 + 241145^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55550255495 + ... + 55550255498.

Almost surely, 2^222201021986 is an apocalyptic number.

222201021986 is a deficient number, since it is larger than the sum of its proper divisors (111100510996).

222201021986 is a wasteful number, since it uses less digits than its factorization.

222201021986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111100510995.

The product of its (nonzero) digits is 13824, while the sum is 35.

The spelling of 222201021986 in words is "two hundred twenty-two billion, two hundred one million, twenty-one thousand, nine hundred eighty-six".